namespace CSharpPro._1027;

public class UserTestChild : UserTest
{
    public override void M1()
    {
        Console.WriteLine("子类重写了 M1 方法");
    }
    public override void M2()
    {
        Console.WriteLine("子类重写了 M2 方法");
    }
    public override void M3()
    {
        Console.WriteLine("子类重写了 M3 方法");
    }
}